EP1074022A1 - Procede de description de plan d'informations de segment de traitement multiniveaux pour multimedia et appareil de generation d'un flux de traitement a partir d'un plan d'informations de segment de traitement multiniveaux et procede connexe - Google Patents

Procede de description de plan d'informations de segment de traitement multiniveaux pour multimedia et appareil de generation d'un flux de traitement a partir d'un plan d'informations de segment de traitement multiniveaux et procede connexe

Info

Publication number
EP1074022A1
EP1074022A1 EP99962551A EP99962551A EP1074022A1 EP 1074022 A1 EP1074022 A1 EP 1074022A1 EP 99962551 A EP99962551 A EP 99962551A EP 99962551 A EP99962551 A EP 99962551A EP 1074022 A1 EP1074022 A1 EP 1074022A1
Authority
EP
European Patent Office
Prior art keywords
digest
level
information
stream
running time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99962551A
Other languages
German (de)
English (en)
Other versions
EP1074022A4 (fr
Inventor
Sung Bae Jun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to EP05000639A priority Critical patent/EP1523194A3/fr
Publication of EP1074022A1 publication Critical patent/EP1074022A1/fr
Publication of EP1074022A4 publication Critical patent/EP1074022A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/44—Browsing; Visualisation therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/48—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/489—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using time information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234381—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26233—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving content or additional data duration or size, e.g. length of a movie, size of an executable file
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4621—Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8453—Structuring of content, e.g. decomposing content into time segments by locking or enabling a set of features, e.g. optional functionalities in an executable program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8549—Creating video summaries, e.g. movie trailer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99941—Database schema or data structure
    • Y10S707/99944—Object-oriented database structure
    • Y10S707/99945—Object-oriented database structure processing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99941—Database schema or data structure
    • Y10S707/99948—Application of database or data structure, e.g. distributed, multimedia, or image

Definitions

  • the present invention relates to a technique for describing a multiple level digest segment information scheme for multimedia contents in a content- based data area of a multimedia stream and method for generating a digest streams(highlights) using the multiple level digest segment information scheme for the purpose of providing a multiple levels of digest streams for a multimedia stream.
  • a digest stream for a multimedia stream is provided for the purpose of enabling users to understand the overall story and the structure of a multimedia content or to find and move to desired position fast.
  • Multimedia server system such as a VOD(Video-on-Demand) server system, a broadcast system, a karaoke, etc., can provide digest streams(highlights) for multimedia contents (e.g., movie, drama, sports, etc.) to achieve above purposes.
  • a digest stream(highlight) of a multimedia stream is constructed by arranging audio-visual segments, each of which is the essence of an original stream in the development of the story.
  • the segment is a sequence of continuous frames. Since the digest stream is a sub stream of the multimedia stream, the size of the digest stream is much smaller than that of the original stream. Therefore, a user who want to understand the overall structure and/or the story of a multimedia content prefers to access a digest stream rather than accessing the entire stream.
  • the digest stream also can be used as a program guide for users who want to select a program from a multimedia database.
  • the one is providing key frames or key regions and the other is providing digest streams(highlights) which is constructed by gathering and arranging important segments of an original stream
  • a content provider extracts a sub stream from the original stream, and stores it separately. In this case, an additional storage for storing the digest stream is required.
  • the content provider edits only a certain time amount of the digest stream and provides it to the user. Accordingly, the user can access only a single level digest stream edited by the content provider. Therefore, users cannot obtain various digest streams of the desired length.
  • a content provider provides only a 10 minute highlight for a 2 hour video. Under that situation, users may want to access 5, 10, 20 minute digest streams respectively, depending upon their situation. In that case, a user who want 5 or 20 minute highlight for the given content can not browse the digest stream of their desire. Only 10 minute digest stream will be served regardless of the user's request.
  • the content provider has to edit and store multiple levels of digest streams for one multimedia stream.
  • a large amount of storage is required to store multiple versions of digest streams, and accordingly, there occurs difficulty in managing each of the digest stream.
  • a method of describing information about multiple levels of digest streams for multimedia contents in accordance with an embodiment of the present invention which includes the steps of: describing the level information of digest segments by multiple levels in the content-based data area of the multimedia content; describing the digest level information of each digest segment and the time range information in a digest segment information structure; and describing multi level digest segment information scheme with digest segment information structures.
  • a method of describing information about multiple levels of digest streams for multimedia contents in accordance with the second embodiment of the present invention which includes the steps of: describing the digest level information of digest segments to a digest level header by multiple levels in the content-based data area of a multimedia stream; describing the time range information of each digest segment in a digest segment information structure; and describing information about digest streams by arranging the digest segment information structures of the same digest level. ; describing multi level digest segment information scheme with digest level headers each of which has a list of digest segment information structures.
  • a method of generating multiple levels of digest streams for multimedia contents which includes the steps of: detecting the digest level and time range information of each digest segment information structures from the multiple level digest information scheme contained in the content-based data area of a multimedia stream; and, when a condition is queried by the user, generating a multiple level digest stream by arranging the digest segments with a priority of more than a certain level corresponding to the condition in a time sequence.
  • an apparatus for generating multiple levels of digest streams for multimedia contents which includes an user input unit; a digest stream level determining unit for determining a digest level of a digest stream corresponding to the condition queried by the user input unit and outputting the same, upon receipt of a multimedia stream signal; and a decoder for decoding the digest segments having the above digest level and outputting the same.
  • Figure 1 shows an example of digest segments for a multimedia stream in accordance with an embodiment of the present invention
  • Figure 2 shows the construction of a multiple level digest segment information scheme of a multimedia stream in accordance with an embodiment of the present invention
  • Figure 3 shows the construction of a multiple level digest segment information scheme of a multimedia stream in accordance with another embodiment of the present invention
  • Figure 4 shows an example of multiple level digest streams constructed by the multiple level digest segment information scheme
  • Figure 5 is a graph showing the total running time of digest streams according to digest levels
  • Figure 6 is a schematic block diagram of an apparatus for generating multiple levels of digest streams for multimedia contents in accordance with an embodiment of the present invention
  • Figure 7 is a schematic block diagram of an apparatus for generating multiple levels of digest streams for multimedia contents in accordance with another embodiment of the present invention.
  • a content-based data area of a multimedia stream generally, an appearance of an audio-visual object, occurrence information of each event, state information of audio-visual objects, events, backgrounds, scene information, shot information, segment information, etc. are described on a time axis.
  • the data structure of a multiple level digest segment information scheme for providing multiple levels of digest streams is described in the content-based data area thereof.
  • the multiple level digest segment information scheme is constructed by a plurality of multiple level digest segment information structures, each of which is a data structure for describing digest segment in which a time range information of the digest segment is described and also a digest level information can be described.
  • a digest stream is comprised of digest segments.
  • An importance level associated with each digest segment is used as a digest level for generating multiple levels of digest streams dynamically.
  • each digest segment information structure has a time range information of time continuous data, and the time range information can be represented by the start point and end point or the start point and duration of the digest segment.
  • a digest segment is different from a shot, a scene and the like.
  • a digest stream is not constructed by connecting shots or scenes. Because the whole content can be analogized by browsing only parts of a shot or a scene in most cases, a digest stream is generally constructed by connecting some parts of shots or scenes. In a field such as sports, digest stream does not use entire shot or entire scene in order to construct a digest stream for the reason of the characteristics thereof.
  • the digest segment corresponds to a shot or a scene, but, in most cases, it does not necessarily correspond to any of them. Therefore, in the present invention, the multiple level digest segment information scheme for providing multiple levels of digest streams by assigning an importance level to each digest segment, rather than by assigning an importance level to a shot or a scene, is proposed.
  • the digest segment is defined as a sequence of continuous frames, which is a general idea of covering shots or segments.
  • Figure 1 shows an example of digest segments for a multimedia stream in accordance with an embodiment of the present invention.
  • the horizontal axis represents the time axis
  • the vertical axis denotes the digest level axis. It is shown that an original stream, which is a multimedia stream, is divided into a plurality of digest segments, which are divided into a plurality of digest levels.
  • a first digest level O' is the highest in priority
  • a n-th digest level 'n-1' is the lowest.
  • FIG. 2 shows the construction of a multiple level digest segment information scheme of a multimedia stream in accordance with an embodiment of the present invention.
  • a portion illustrated by a square is a digest segment information structure, and a number illustrated within the square is an ID of a digest segment information structure, which is stated only for the convenience of explanation.
  • Digest segment structures can be sequentially arranged in a time sequence, each of which has its digest level and time range information(start point and end point or start point and duration).
  • FIG 3 shows the construction of a multiple level digest segment information scheme for a multimedia stream different from that of Figure 2
  • Digest level headers(L 0 , L ⁇ , L-..,) are divided according to digest levels, and assuming that the number of digest levels is n, the number of digest level headers is n
  • digest segment information structures of the corresponding digest level are arranged
  • the digest segment information structures can be arranged in a time sequence
  • a first digest level header(L 0 ) has digest segment information structures 5, 10, 30 and 138 arranged therein, and a second digest segment information structures 12, 22, 40, 50, 54, 70 and 88 arranged therein
  • the digest segment information structure in accordance with another embodiment of the present invention as shown in Figure 3 has its time range information, and its digest level is described in its digest level header
  • the number of digest levels for the original stream is n, and the number of digest segments for the original stream is m as described above
  • S denotes the j-th digest segment information structure
  • L(S,) denotes the digest level of the digest segment information structure S
  • H denotes the digest stream whose digest level is i
  • each element of the set S(H,) is a digest segment information structure whose digest level is less than or equal to i
  • All the digest segment information structures contained in the set S(H,) can be sorted in a time sequence
  • the digest stream whose digest levels is k * +1 (H k+1 ) includes the digest stream whose digest level is k(H k )
  • the first digest stream(H 0 ) is constructed by arranging digest segment information structures(S5, S10, S30 and S138) of digest level O' in a time sequence
  • the second digest stream(H 1 ) is constructed by arranging the digest segment information structures(S5, S10, S30 and S138) digest level O' and digest segment information structures(S12, S22, S40, S50, S54, S70 and S88) of digest level '1' in a time sequence
  • the second digest stream(H 1 ) is constructed by arranging digest segment information structures(S5, S10, S12, S22, S30, S40, S50, S54, S70, S88 and S138) in a time sequence
  • FIG. 4 shows an example of multiple level digest streams constructed by the above-described method
  • the running time of each digest stream can be obtained based on the time range information contained in each of the plurality of digest segment information structures, which will be described below
  • the total running time of the digest segment information structures belonging to a i-th digest level is the sum of the running time of each of digest segment information structures which belong to the i-th digest level.
  • the running time R(H k ) of the digest stream whose digest level is k(H k ) can be represented by the sum of the running time of digest information structures whose digest level is less than or equal to k, can be expressed as follow:
  • R(Li) denotes the sum of the running time of each digest segment information structure whose digest level is i.
  • Figure 5 is a graph showing the total running time of a digest streams according to digest levels. As illustrated therein, since the digest stream whose digest level is k+1 (H k+1 ) includes the digest stream whose digest level is k(H k ). the running time R(H k+1 ) of the digest stream(H k+1 ) is longer than or equal to the running time R(H k ) of the digest stream(H k ).
  • Figure 6 is a schematic block diagram of an apparatus for generating multiple levels of digest streams for a multimedia content in accordance with an embodiment of the present invention.
  • a digest stream corresponding to the queried running time is provided.
  • the apparatus in accordance with an embodiment of the present invention includes a digest stream level determining unit 1 for determining and outputting the level of a digest stream corresponding to the running time queried by the user, upon receipt of a multimedia stream signal; a user input unit 2 for outputting the running time queried by the user to the digest stream level determining unit 1 by the operation of the user; a decoder 3 for outputting digest segments having a digest level by decoding based on the digest level which is inputted from the digest stream level determining unit 1 , upon receipt of a multimedia stream signal; and a browsing/recording/editing unit 4 for sequentially browsing, recording, and editing the outputted digest segments.
  • a digest stream level determining unit 1 for determining and outputting the level of a digest stream corresponding to the running time queried by the user, upon receipt of a multimedia stream signal
  • a user input unit 2 for outputting the running time queried by the user to the digest stream level determining unit 1 by the operation of the user
  • a decoder 3 for out
  • the digest stream level determining unit 1 includes a digest segment information scheme analyzing unit 11 and a digest stream information display unit 12.
  • a content provider or a media file supplies the digest stream level determining unit 1 with a stream signal, and the digest stream level determining unit 1 determines a digest level of a user-selected digest stream.
  • the multimedia stream signal includes a stream data and a content-based data for the stream, and the content-based data of the stream includes related multiple level digest segment information scheme.
  • the multiple level digest segment information scheme analyzing unit 11 computes the running time of each digest stream by analyzing the multiple level digest segment information scheme.
  • the digest stream information display unit 12 displays the running time by computed digest streams to the outside. When the user inputs a desired running time among the displayed running times, the running time is queried through the user input unit 2.
  • the digest stream information display unit 12 determines a digest level of a digest stream corresponding to the queried running time, and outputs it to the decoder 3.
  • the decoder 3 outputs digest segments with the digest level by decoding based on the digest level which is inputted from the digest stream level determining unit 1 , upon receipt of a multimedia stream signal. The outputted digest segments are sequentially browsed, recorded, and edited by the browsing/recording/editing unit 4.
  • the decoder 3 if the digest level queried by the user is "1", the decoder 3 outputs digest segments of digest level "0" or "1" from the multimedia stream signal by decoding. In this manner, only the digest level of a digest stream is inputted to the decoder 3, and the decoder 3 selects digest segments from the multimedia stream signal based on the digest level and outputs them to the browsing/recording/editing unit 4.
  • FIG. 7 is a schematic block diagram of an apparatus for generating multiple levels of digest stream for a multimedia content in accordance with another embodiment of the present invention.
  • the apparatus as shown in Figure 7 provides a digest stream with a running time most close to the running time queried by the user.
  • the apparatus in accordance with another embodiment of the present invention includes a digest stream level determining unit 5, an user input unit 2, decoder 3, and a browsing/recording/editing unit 4.
  • the digest stream level determining unit 5 includes a digest segment information scheme analyzing unit 11 and a digest level determining unit 51.
  • the digest segment information scheme analyzing unit 11 , decoder 3, and browsing/recording/editing unit 4 are identical with those illustrated in Figure 6.
  • the digest level determining unit 51 When the user inputs a desired running time by the user input unit 2, the digest level determining unit 51 outputs the digest level of a digest stream with a running time most close to the running time inputted by the user. That is, the digest level determining unit 51 compares the running time queried by the user with the running time of a digest stream of each multiple level digest stream, selects a running time R(H k ) which is most close to the queried running time, and outputs a digest level(k) of the digest stream with the selected running time R(H k ) to the decoder 3.
  • the running time queried by the user is marked by a thick line. The running time corresponding to the digest level(k) is slightly longer than the queried running time, and the running time of a digest stream corresponding to a digest level(k-l ) is slightly shorter than the queried running time.
  • the decoder 3 receives the multimedia stream signal, and outputs digest segments of a digest level lower than k or k-1 , based on the digest level(k or k- 1 ).
  • the outputted digest segments are sequentially browsed, recorded and edited by the browsing/recording/editing unit 4.
  • the user input unit 2 as illustrated in Figures 6 and 7 is described by taking an operation of querying a running time of a digest stream for example, for the convenience of explanation.
  • the user can queries other conditions besides a running time
  • the user input unit 2 can receive the conditions from the user, and the apparatus in accordance with the present invention provides a digest stream according to various conditions inputted by the user, which will be described below.
  • the digest stream level determining unit 5 constructs a digest stream based on the conditions, for example, occurrence of a events, appearance of persons, backgrounds, objects, and some kinds of situation information.
  • the various conditions queried by the user are, for example, as follows:
  • the digest stream level determining unit 5 construct a digest stream based on a running time and various query conditions or filtering conditions. By lowering or raising the digest level of each digest segment, a digest stream is constructed. For instance, although a digest segment has a low digest level(with a digest level value close to n), the digest segment is considered as a digest segment with a little higher digest level for thereby constructing a digest stream if it corresponds to a query condition(e.g., "sinking scene"). Occurrence of events, appearance of persons, backgrounds, objects, and some kinds of situation information mentioned above are information generally contained in a content-based data area of a multimedia stream.
  • a digest level running time information or a digest stream running time information can be added to a primary digest segment information scheme as shown in Figure 2 or Figure 3.
  • the digest level running time information is information about the sum of the running times of digest segments of the same digest level is described according to digest levels
  • the running time information of the digest stream is the running time information of a possible digest stream.
  • Such running time information can be described using an extra data structure, for example, in the case of a multiple level digest segment information scheme as shown in Figure 2.
  • the running time information can be described in each digest level header, or described using other data structure.
  • digest level running time information or digest stream running time information can be used for a rapid running time computation and for a parity check for a damaged data.
  • the parity check is possible by comparing the total running time of digest segments of the same digest level with the digest level running time of that digest level, and also by comparing the total running time of digest segments corresponding to a digest level lower than a particular digest level with the digest stream running time of that digest level. More specifically, if the total running time of the digest segments of the same digest level and the digest level running time of that digest level are equivalent each other, it is determined that there is no data damage, and if the two running times are different, it is determined that there is a data damage.
  • the total running time of digest segments having a digest level lower than a particular digest level and the digest stream running time corresponding to that digest level are equivalent each other, it is determined that there is no data damage, and if the two running times are different, it is determined that there is a data damage.
  • the corresponding information can be displayed by accessing only the digest level running time information or the digest stream running time information.
  • a digest stream can be generated by accessing only the actual digest segment.
  • digest level running time information and digest stream running time information additionally described in the multiple level digest segment information can be utilized for a rapid digest stream information transmission and for a parity check for determining whether or not there is a data damage.
  • a multiple level digest segment information scheme is stored in the content-based segment information scheme of an original stream, and an importance level(i.e., digest level) of a digest level information, a time range information, etc. is given to a digest segment of the multiple level digest segment information scheme, whereby the amount of storage for storing a digest stream is greatly decreased and it takes a very little time to encode each digest stream.
  • a digest stream of a multimedia stream is provided for an user in a multimedia server system
  • the user can also understand the overall story and/or the structure of a multimedia content and he or she can find and move to desired position fast by accessing the digest stream when he or she has a CD(compact disc) for the content.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Library & Information Science (AREA)
  • Human Computer Interaction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

L'invention vise à fournir de multiples niveaux de flux de traitement pour multimédia avec de petites quantités de stockage supplémentaire grâce à un plan d'information de segment de traitement multiniveaux. Selon l'invention, une information de segment de traitement multiniveaux est contenue dans la zone données selon le contenu multimédia par représentation d'une information concernant le niveau de chaque segment de traitement par de multiples niveaux d'une zone de données basée sur le contenu d'un contenu multimédia. Le niveau de traitement du segment de traitement et l'information sur la tranche de temps du segment de traitement dans le plan d'informations de segment de traitement sont décrits et les segments de traitements dont le niveau de traitement est inférieur ou égal au niveau de traitement nécessaire sortent par décodage après réception du niveau de traitement du segment de traitement.
EP99962551A 1999-01-30 1999-12-31 Procede de description de plan d'informations de segment de traitement multiniveaux pour multimedia et appareil de generation d'un flux de traitement a partir d'un plan d'informations de segment de traitement multiniveaux et procede connexe Withdrawn EP1074022A4 (fr)

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EP05000639A EP1523194A3 (fr) 1999-01-30 1999-12-31 Méthode de description d'une information de flux de résumé pour un contenu multimédia et description d'un groupe de segments de résumé pour décrire un condensé de contenu multimédia

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KR9903015 1999-01-30
KR1019990003015A KR100296967B1 (ko) 1999-01-30 1999-01-30 멀티미디어 스트림의 다단계 요약 세그먼트 정보 스킴 구성 방법 및 구성된 다단계 요약 세그먼트 정보 스킴으로 부터 요약 스트림 발생 방법과 이러한 방법에 의해 제공되는 다단계 요약 스트림의 브라우징/녹화/편집 장치
PCT/KR1999/000850 WO2000045388A1 (fr) 1999-01-30 1999-12-31 Procede de description de plan d'informations de segment de traitement multiniveaux pour multimedia et appareil de generation d'un flux de traitement a partir d'un plan d'informations de segment de traitement multiniveaux et procede connexe

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EP05000639A Withdrawn EP1523194A3 (fr) 1999-01-30 1999-12-31 Méthode de description d'une information de flux de résumé pour un contenu multimédia et description d'un groupe de segments de résumé pour décrire un condensé de contenu multimédia

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EP (2) EP1074022A4 (fr)
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CN (1) CN1171231C (fr)
AU (1) AU1896200A (fr)
CA (1) CA2323890C (fr)
WO (1) WO2000045388A1 (fr)

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KR100296967B1 (ko) 2001-09-26
EP1074022A4 (fr) 2005-08-17
US20050108758A1 (en) 2005-05-19
EP1523194A2 (fr) 2005-04-13
CN1296622A (zh) 2001-05-23
US7392467B2 (en) 2008-06-24
US20050108622A1 (en) 2005-05-19
WO2000045388A1 (fr) 2000-08-03
JP2002536857A (ja) 2002-10-29
CA2323890A1 (fr) 2000-08-03
KR20000052127A (ko) 2000-08-16
US7406655B2 (en) 2008-07-29
CN1171231C (zh) 2004-10-13
US6918081B1 (en) 2005-07-12
EP1523194A3 (fr) 2005-08-17
AU1896200A (en) 2000-08-18
CA2323890C (fr) 2009-04-28
JP3532858B2 (ja) 2004-05-31

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